Public Health England’s annual report on HIV in London

HIV remains an important public health problem in London with high and increasing rates of HIV and evidence of sustained HIV transmission in men who have sex with men (MSM).

It is of particular concern that a large proportion of people with HIV are diagnosed late in London (37% from 2012 to 2014, compared to 42% in England), as defined by a CD4 count of less than 350 cells/mm3 at diagnosis [but not necessarily with an AIDS-defining illness?]

The two commonest probable [emphasis added] routes of transmission for London residents living with diagnosed HIV in 2014 were sex between men (51%) and sex between men and women (45%).

HIV testing is particularly important for MSM as in the UK an estimated 6,500 have undiagnosed HIV infection and incidence remains high. It is also important to promote HIV testing within black-African communities as an estimated 3,900 have undiagnosed HIV infection in the UK. [The same groups as ever]

in 2014 in England, 6.4% of MSM sexual partners and 5.5% of heterosexual male partners of people diagnosed with HIV were also positive for HIV infection. [Which is very low, on the assumption that those tested had a reason to]